The two places have different legal systems and systems. Without a Hong Kong law degree and a Hong Kong lawyer's license, it is simply impossible to practice law in Hong Kong. If you want to develop in Hong Kong, you must follow Hong Kong's judicial system and lawyer system, obtain a bachelor's degree in law, and then start an internship.
To become a solicitor (barrister), you need to practice for one year with a barrister who has been practicing for more than 5 years, learn to defend in court, and pass the Bar Association examination to obtain the barrister qualification.
To become a junior lawyer (solicitor), you need to practice for 2 years with a lawyer who has practiced for more than 5 years, pass the assessment of the Bar Association, register with the High Court of Hong Kong, and obtain a practicing certificate.
In addition, people who have obtained barrister or solicitor qualifications in the UK can also practice in Hong Kong. Legal professionals who have worked in Hong Kong's legal profession or in Hong Kong's higher legal institutions can apply for a lawyer's license.
Therefore, if you want to develop in Hong Kong, everything must start from scratch! It is recommended that owners develop in the mainland.